For the past 16 years, Andrew Rogers has been building enormous stone symbols called geoglyphs on all seven continents around the world. Designed to be seen from above, these artistic creations have a global purpose: to form a set of connected figures embracing the cultural heritage of all civilizations. Whether on the peaks of Nepal or in the Bolivian Andes, by the granite monoliths of Sri Lanka or the frigid ice caps of Antarctica, each of the 51 geoglyphs profiled here was built using local materials and conceived with the help of regional workers, archaeologists, and ethnologists. These stories and photos illustrate the unlimited potential of community cooperation as they document a project whose scope is unparalleled in modern art history.